GB709614A - Improvements in the production of 4-hydroxy-7.8-phthaloylcinnolines - Google Patents
Improvements in the production of 4-hydroxy-7.8-phthaloylcinnolinesInfo
- Publication number
- GB709614A GB709614A GB21514/52A GB2151452A GB709614A GB 709614 A GB709614 A GB 709614A GB 21514/52 A GB21514/52 A GB 21514/52A GB 2151452 A GB2151452 A GB 2151452A GB 709614 A GB709614 A GB 709614A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amino
- hydroxy
- reacted
- sulphuric acid
- acetyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
- C09B5/24—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
- C09B5/44—Azines of the anthracene series
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
4 - Hydroxy - 7,8 - phthaloylcinnolines are obtained by treating 1-amino-2-acetylanthraquinones with diazotizing agents in a water-containing sulphuric acid medium, preferably in concentrated sulphuric acid to which 10-70 per cent by weight of water has been added. Substituents, e.g. chlorine or amino, may be simultaneously exchanged for hydroxy. In examples: (1) 1-amino-2-acetylanthraquinone is reacted with sodium nitrite; (2) 1-amino-2-acetyl-4-chloranthraquinone or 1,4-diamino-2-acetyl-anthraquinone is reacted with a nitrosyl sulphuric acid to give 4-hydroxy-6-chlor-7,8-phthaloylcinnoline or 4,6 - dihydroxy - 7,8 - phthaloylcinnoline according to conditions; (3) 1 - amino - 2 - acetyl - 5 - nitro - or benzoylamino-anthraquinone is reacted with sodium nitrite.ALSO:4-Hydroxy-7, 8-phthaloylcinnolines are obtained by treating 1-amino-2-acetylanthraquinones with diazotizing agents in a water-containing sulphuric acid medium, preferably in concentrated sulphuric acid to which 10-70 per cent by weight of water has been added. Substituents, e.g. chlorine or amino, may be simultaneously exchanged for hydroxy. In examples, (1) 1-amino-2-acetylanthraquinone is reacted with sodium nitrate; (2) 1-amino-2-acetyl-4-chlor-anthraquinone or 1, 4-di-amino-2-acetylanthraquinone is reacted with a nitrosyl sulphuric acid to give 4-hydroxy-6-chlor-7, 8-phthaloylcinnoline or 4, 6-dihydroxy-7, 8-phthaloylcinnoline according to conditions; (3) 1-amino-2-acetyl-5-nitro- or benzoylamino-anthraquinone is reacted with sodium nitrate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE709614X | 1951-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB709614A true GB709614A (en) | 1954-05-26 |
Family
ID=6617895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21514/52A Expired GB709614A (en) | 1951-08-28 | 1952-08-27 | Improvements in the production of 4-hydroxy-7.8-phthaloylcinnolines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB709614A (en) |
-
1952
- 1952-08-27 GB GB21514/52A patent/GB709614A/en not_active Expired
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